Mad River, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Mad River in?

Mad River is in Trinity County, EPA Zone 3.

Q: How much does radon mitigation cost in Mad River?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Trinity County

EPA Zone 3

Positioned in Trinity County in Northern California's mountainous 95552 region, Mad River sits on complex geological formations that generally produce lower radon levels typical of the area. Testing data remains limited for this remote community, making individual home assessment important for accurate risk evaluation. Residents should consider professional radon testing to ensure their homes maintain healthy indoor air quality.

Mad River, CA Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Mad River, CA Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Mad River Radon Facts

Key details about the radon risk profile for Mad River and the 95552 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Trinity County, CA

Zip Code

95552

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Mad River and the 95552 zip code are located in Trinity County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Mad River, CA

What EPA Radon Zone is Mad River in?

Mad River and the 95552 zip code are in Trinity County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Mad River?

Radon mitigation in Mad River typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Mad River?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in California

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Los Angeles	7.83 pCi/L	6
Mammoth Lakes	10.80 pCi/L	5
San Jose	4.20 pCi/L	5
Rancho Palos Verdes	8.00 pCi/L	4
Woodland Hills	7.67 pCi/L	3
South Lake Tahoe	6.33 pCi/L	3
Palos Verdes Peninsula	6.00 pCi/L	3
Bishop	5.67 pCi/L	3
Sacramento	4.33 pCi/L	3
Oakland	3.33 pCi/L	3
Fresno	10.00 pCi/L	2
Davis	8.00 pCi/L	2
Palo Alto	6.50 pCi/L	2
Studio City	6.50 pCi/L	2
Menlo Park	5.00 pCi/L	2
Truckee	5.00 pCi/L	2
Walnut Creek	4.00 pCi/L	2
San Diego	3.50 pCi/L	2
San Francisco	3.50 pCi/L	2
Belmont	20.00 pCi/L	1